Which among the following is correct structure of the semicarbazone formed when ethanal reacts with semicarbazide?

According to the question when ethanal(Acetlyaldehyde) react with semicarbazide then the product formed is 

The structure of semicarbazone is 

${\mathrm{CH}}_3\mathrm{CHO} + {\mathrm{NH}}_2{\mathrm{NHCONH}}_2 \to {\mathrm{CH}}_3\mathrm{CH}=\mathrm{NNHCONH}$

So from above reaction we know the structure of semicarbazone